First, civil war broke out in China after World War II. After Chiang Kai-shek's defeat, he shipped all the gold, silver and jewels to Taiwan Province Province. The People's Liberation Army crossed the river on April 20 and occupied Shanghai on May 27, because Chiang Kai-shek gave the Shanghai garrison a death order and had to seize the dollars and jewels in the Shanghai bank at once. As a result, the People's Liberation Army only won the empty city of Shanghai, and China's economy declined during the Cultural Revolution, while Japan was different. The Korean War gave it a chance to develop. The United States invested and built factories there to produce military products. The supplies of hundreds of thousands of American troops are all provided by Japan. The United States has provided billions of dollars in aid to Japan. MacArthur also reformed Japan's economic system and put the Japanese economy on the right track. So of course, Japan is developing better than China.